IMFs & Bonds
Naming & Writing Formulas & Other things
Molecular Structure
Reactions
Random
100
How many electrons are involved in a double bond between carbon and oxygen?
4 electrons
100
What is the chemical formula for magnesium bromide?
MgBr2
100
What shape would a molecule have if it's center atom has 5 bonding electron pairs and no lone pairs?
Trigonal bipyramidal
100
Will the following reaction occur?
Al + CaCl2 -->
No. Aluminum is lower on the activity series than calcium.
100
What city are the 2024 Olympics being hosted in?
Paris, France
200
List the three primary IMFs in order from strongest to weakest.
Hydrogen Bonding > Dipole-Diploe > London Dispersion
200
What is the name of this compound?
S2F10
Disulfur decafluoride
200
Draw the Lewis Dot structure for ammonia (NH3)
200
Write the balanced equation with products for the following reaction:
Cl2 + CaI2 --> ______
Cl2 + CaI2 -->CaCl2 + I2
200
What was the first movie to win the Oscar for best animated film?
Shrek (2001)
300
In the compound HCN, what type of bond exists between carbon and nitrogen?
A triple covalent bond (non-polar)
300
What is the name of this compound:
CuOH
Copper (I) hydroxide
300
Is formaldehyde (CH2O) as a molecule polar or non-polar? Why?
Polar. C=O bond is polar and structure is asymmetric
300
What are the products of the following reaction? (also balance the equation)
C3H8 + O2 -->
C3H8 + 5O2 --> 3CO2 + 4H2O
Combustion
300
Which element has a larger 1st ionization energy, germanium or phosphorus?
Phosphorus
400
Between acetone (C3H6O) and propane (C3H8), which should have a higher boiling point and why?
Acetone will have a higher boiling point than propane, because acetone, as a polar molecule, has dipole-dipole IMFs, while propane, a non-polar molecule, just has dispersion IMFs. Stronger IMFs create a higher boiling point.
400
Explain the law of definite proportions.
A given chemical compound always contains its component elements in a fixed ratio and does not depend on its source and method of preparation
400
Draw the Lewis structure of XeF4, what is its molecular structure? Is the molecule polar?
Square planar, non-polar
400
Balance the following equation:
_C3H8O + _O2 --> _CO2 + _H2O
2C3H8O + 9O2 --> 6CO2 + 8H2O
400
Describe the periodic trend for atomic radius and why it follows the pattern it does.
Across a period atomic radius decreases due to a larger positive nucleus pulling in electrons. Down a column atomic radius increases due to electrons occupying higher energy levels.
500
Explain on an atomic scale, the difference between non-polar covalent, polar covalent, and ionic bonds. What is happening to the electrons?
Points given by Dace's discretion
500
You have 15g each of two compounds containing just oxygen and sulfur. The first compound contains 7.5g of sulfur and the second compound contains 6g of sulfur. Show how this data illustrates the law of multiple proportions.
7.5g S -> 7.5g O 6g S -> 9gO
7.5gS/7.5=7.5gO/7.5 6gS/6=9gO/6
1g S = 1g O 1g S = 1.5g O
1.5gO/1gO=3/2
500
Draw the Lewis Dot structure for C6H6, including any resonance structures
(hint: the carbons want to be similar to each other bond-wise)
500
Write the balanced chemical equation for the reaction between potassium chromate & silver nitrate. Will the reaction occur? If so, what is the precipitate?
K2CrO4(aq) + 2AgNO3(aq) --> Ag2CrO4(s) + 2KNO3(aq)
The reaction will occur and silver chromate is the precipitate.
500
What is the term for the scientific study of bones?
Osteology. From the Greek ὀστέον (ostéon) meaning 'bones', and λόγος (logos) meaning 'study.